Abstract
The behavior of ethanol oxidation on electro-deposited Ni-Pt electrodes was investigated using cyclic voltammetry and polarization curves in 0.4 M KOH solutions. The ethanol concentration was in the ranges of 0∼0.25 M and 0∼1000 ppm. The rate constants of Ni(OH)2/NiOOH and the ethanol oxidizing reaction on the Ni-Pt electrodes were calculated and the results were compared with those for Ni electrodes. The anodic current of Ni-Pt electrodes increased with the concentration of ethanol in the forward sweep in both ranges of ethanol concentration. The anodic and cathodic currents on Ni-Pt electrodes increased with scan rate at 0.1 M and 200 ppm concentrations of ethanol. No intersection of anodic current was observed on Ni-Pt electrodes. The kinetic parameters of Ni(OH)2/NiOOH and ethanol oxidation on Ni-Pt electrodes were determined by comparing the experimental results with kinetic equations. The anodic transfer coefficient of the Ni(OH)2/NiOOH reaction on Ni-Pt electrodes was larger than that on Ni electrodes while the rate constant, kc1, of Ni-Pt electrodes was smaller than that of Ni electrodes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
